Vacuum cleaner



FIG. 1 is a front/right-side/top perspective view of a vacuum cleaner showing our new design;

FIG. 2 is a front elevational view thereof, the rear view being identical;

FIG. 3 is a left side elevational view thereof, the right side being identical;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a front/right-side/bottom perspective view thereof.

The details shown in broken lines form no part of the claimed design. 

CLAIM We claim the ornamental design for a vacuum cleaner, as shown and described. 